The money is what you care about? Do Durex provide hookers to test them on? After all, if they survive the hooker test, then you've got a good product.
What? Hookers???? I thought it would just be sitting at home watching Cash In The Attic and knocking out the occasional poshie.
Well, I just presumed Durex would sweeten the deal. Though they should have a research department for poshies too- grip, smell, speed etc.